pfd

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英 
  • 网络工艺流程图(process flow diagram)；鉴频鉴相器(Phase Frequency Detector)；主飞行显示器(Primary Flight Display)

英英

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1.
To the right of that light, above and between the PFD and ND, are two knobs; these control what systems are linked to the pilot's displays.
灯的右边，PFD和ND上方中间的位置有两个旋钮；它们用来控制正驾驶显示器显示的系统信息。
article.yeeyan.org
2.
The average probability of failure on demand is the main basis used to determine the safety integrity level of safety instrumented systems.
安全仪表系统在一段时间内要求时失效概率的平均值PFD（avg）是评判其安全完整性水平SIL的主要依据。
ecmaya.com
3.
The top one is the standby flight display -- it looks just like the regular PFD.
上面一个是备用飞行显示器——看上去和常规的PFD一样。
article.yeeyan.org
4.
PFD can occur as a result of injury through strenuous activities like Pilates, biking, and horseback riding.
PFD可能由繁重的运动——如普拉提、骑单车和骑马等引起的肌肉损伤所导致。
article.yeeyan.org
5.
The two main displays in front of the pilot are the PFD (primary flight display; left) and ND (navigational display; right).
正驾驶面前的两块显示屏分别是PFD（主飞行显示屏；左侧）和ND（导航显示屏；右侧）。
article.yeeyan.org
6.
The top-of-the- line vest for whitewater rafting makes an excellent PFD for river rescue.
乘筏航行水银的线在顶的背心对于在河上拯救是极好的PFD。
free.thetail.xyz
7.
of Phase Frequency Detector (PFD) and modifying the rest of the PLL blocks.
相位频率检测器（PFD）和修改其他的PLL模块。
www.xkyn.com
8.
In the event that the PFD fails, the pilot can still get critical flight information from these backup instruments.
当PFD失灵时，飞行员仍可在这些备用设备上读取关键的飞行信息。
article.yeeyan.org
9.
When the PFD does not generate pulses in lock mode, the charge pump does not provide charge to the loop filter.
当PFD在锁定模式中不生成脉冲时，电荷泵不提供电荷给环路滤波器。
www.pat365.com
10.
Conclusion Trace PFD exists in eyes. There is no relevance between poisonous development of retina and remaining dosage of PFD.
结论：微量PFD存在于眼内，视网膜毒性发展进程与PFD的残留剂量无关联；
xuebao.jlu.edu.cn